Sam, contact Jessie Unruh at jlu8989@ksu.edu, she will be able to give you any info you needed. I know that we usually skied from Feb/March-November on the water ski team. Tuttle is usually iced over for most of Dec-Feb., we would get out earlier if the ice cleared. I know there is a pretty good group getting together out there for the wakeboard team. You should be able to get more information around here.